<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
    <script src="https://unpkg.com/vue@2/dist/vue.js"></script>
    <script src="https://unpkg.com/element-ui/lib/index.js"></script>

</head>

<body>
    <div id="app">
        {{a}}
        
        <input type="text" v-model="a">



    </div>
</body>

<script>
    new Vue({
        el: '#app',  //指定要控制的控件
        data: {
            a: "数据"
        },
        methods: {   //这里存放方法

        }, mount: {

        }
    })
</script>

</html>